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arXiv 1209.1202hep-ph
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全息QCD模型中手征对称性破缺和线性禁闭的协调

Accommodate chiral symmetry breaking and linear confinement in a dynamical holographic QCD model

Danning Li, Mei Huang, Qi-Shu Yan

摘要:

我们构造了一个自洽的全息QCD模型,它可以实现QCD的两个最重要的现象,即手征对称性破缺和禁闭。该模型是在引力子-介子-标量系统的框架下建立的,其中介子场是2维的,可能与2维的胶子凝聚对偶,导致线性禁闭,而标量场对应于夸克反夸克凝聚,可以解释手征动力学性质.在这个框架内,强子的Regge谱和夸克之间的线性势都可以被容纳。我们还发现,在这个框架中,负的双光子背景可以安全地排除。

英文摘要:

We construct a self-consistent holographic QCD model which can realize two most important phenomena of QCD, i.e. chiral symmetry breaking and confinement. The model is formulated in the framework of graviton-dilaton-scalar system, where the dilaton field is of dimension-2 which might be dual to the dimension-2 gluon condensate and can lead to the linear confinement, while the scalar field corresponds to the quark anti-quark condensate and can explain the property of chiral dynamics. Within this framework, both Regge spectra of hadrons and the linear potential between quarks can be accommodated. It is also found that the negative dilaton background can be safely excluded in this framework.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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